I am a very basic blender user, I need to know if there is a add-on or a built in function that could export selected objects model transformation matrix (the matrix that contains the models scaling, rotation and translation information).
Thanks!
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$\begingroup$ What do you mean by export? To where or in what format? This would be a pretty easy thing to do using a python script, but you need to be more specific about how you need the matrix to be represented and exported. $\endgroup$ – TLousky Sep 28 '15 at 20:38
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$\begingroup$ For example a text file, any format would be fine. $\endgroup$ – VOid Sep 28 '15 at 20:48
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Alrighty, then this script creates a text file with the transform matrix [see answer here to understand blender's transform matrix format] of the active object as it is represented in blender. Just copy and paste it into a text editor window in Blender, save your blendfile where you want your text file to be created, and run the script:
import bpy
from os.path import dirname, join
if bpy.context.object and bpy.data.filepath:
fname = bpy.context.object.name + ".matrix"
fpath = join( dirname( bpy.data.filepath ), fname )
f = open( fpath, "w" )
f.write( str( bpy.context.object.matrix_world ) )
f.close()
Example:
For this transformed cube with the following transform values:
You get this result in the generated textfile:
<Matrix 4x4 ( 0.6416, 0.2411, 0.7263, -0.8912)
(-0.8174, 0.1801, -1.0416, -2.1409)
(-0.8864, 0.0084, 1.4863, 3.1665)
( 0.0000, 0.0000, 0.0000, 1.0000)>
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There is this Blender add-on, that allows you to extract transformation matrices from objects and write them on disc.
It also allows you to apply transformation matrices to object - for instance by loading them from disc.
Here is a screen shot of the GUI elements added by the add-on.
